* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0f1a2b;
            color: #e0e7ff;
            line-height: 1.7;
            padding-top: 80px; 
        }
        a {
            color: #4fc3f7;
            text-decoration: none;
            transition: color 0.3s, transform 0.2s;
        }
        a:hover {
            color: #29b6f6;
            transform: translateY(-2px);
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-padding {
            padding: 60px 0;
        }
        header {
            background: linear-gradient(135deg, #1a237e 0%, #311b92 100%);
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(45deg, #ff9800, #ffeb3b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            animation: logoGlow 1s ease-in-out;
        }
        @keyframes logoGlow {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.8; }
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .desktop-nav a {
            color: #bbdefb;
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 5px;
        }
        .desktop-nav a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: #ffffff;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: #ffeb3b;
            border-radius: 2px;
            transition: 0.3s;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background-color: #1a237e;
            flex-direction: column;
            padding: 20px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.5);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin-bottom: 15px;
        }
        .mobile-nav a {
            color: #e3f2fd;
            font-size: 1.2rem;
            display: block;
            padding: 10px;
            border-bottom: 1px solid #3949ab;
        }
        .breadcrumb {
            background-color: #1e2a4a;
            padding: 15px 20px;
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .breadcrumb a {
            color: #90caf9;
        }
        .breadcrumb span {
            color: #b0bec5;
            margin: 0 8px;
        }
        main {
            background-color: #152036;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            margin-bottom: 40px;
        }
        .article-header {
            padding: 40px 40px 20px;
            border-bottom: 3px solid #ff9800;
        }
        h1 {
            font-size: 2.8rem;
            color: #ffcc80;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .meta-info {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
            color: #b0bec5;
            font-size: 0.95rem;
        }
        .update-time {
            color: #ffab91;
            font-weight: bold;
        }
        .content-body {
            padding: 40px;
        }
        h2 {
            font-size: 2.2rem;
            color: #80deea;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px dashed #3949ab;
        }
        h3 {
            font-size: 1.8rem;
            color: #a5d6a7;
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.4rem;
            color: #ffcc80;
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: #2c387e;
            border-left: 5px solid #ff9800;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .tip-box {
            background-color: #1b5e20;
            border: 1px solid #4caf50;
            padding: 20px;
            border-radius: 10px;
            margin: 25px 0;
        }
        .tip-box i {
            color: #c8e6c9;
            margin-right: 10px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-card {
            background: linear-gradient(145deg, #283593, #1a237e);
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
            transition: transform 0.3s;
        }
        .stat-card:hover {
            transform: translateY(-10px);
        }
        .stat-card h5 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: #bbdefb;
        }
        .stat-card p {
            font-size: 2rem;
            font-weight: bold;
            color: #ffcc80;
        }
        .interactive-section {
            background-color: #1e2a4a;
            padding: 30px;
            border-radius: 15px;
            margin: 50px 0;
        }
        .form-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        .form-box {
            background-color: #263238;
            padding: 25px;
            border-radius: 10px;
        }
        .form-box h3 {
            color: #4fc3f7;
            margin-top: 0;
        }
        input, textarea, select {
            width: 100%;
            padding: 12px 15px;
            margin: 10px 0 20px;
            background-color: #37474f;
            border: 1px solid #546e7a;
            border-radius: 5px;
            color: #ffffff;
            font-size: 1rem;
        }
        button {
            background: linear-gradient(45deg, #ff9800, #ff5722);
            color: white;
            border: none;
            padding: 14px 25px;
            border-radius: 5px;
            cursor: pointer;
            font-weight: bold;
            font-size: 1rem;
            transition: background 0.3s, box-shadow 0.3s;
        }
        button:hover {
            background: linear-gradient(45deg, #ff5722, #ff9800);
            box-shadow: 0 5px 15px rgba(255, 152, 0, 0.4);
        }
        .star-rating {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star-rating i {
            color: #546e7a;
            cursor: pointer;
            font-size: 1.8rem;
            transition: color 0.2s;
        }
        .star-rating i.active {
            color: #ffeb3b;
        }
        footer {
            background-color: #0d1524;
            padding: 40px 0 20px;
            border-top: 3px solid #ff9800;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
            margin-bottom: 30px;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h4 {
            color: #4fc3f7;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        friend-link {
            display: block;
            padding: 10px;
            background-color: #1a237e;
            margin: 10px 0;
            border-radius: 5px;
            border-left: 4px solid #ff9800;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #37474f;
            color: #90a4ae;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            .content-body { padding: 30px; }
        }
        @media (max-width: 768px) {
            body { padding-top: 70px; }
            .desktop-nav { display: none; }
            .hamburger { display: flex; }
            .header-container { padding: 12px 15px; }
            .my-logo { font-size: 1.8rem; }
            .article-header, .content-body { padding: 25px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            .form-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 1.7rem; }
            .meta-info { flex-direction: column; align-items: flex-start; }
            .stats-grid { grid-template-columns: 1fr; }
        }